chemistry test #1

Question 1

key term: element

Answer 1

most simple kind of substance

Question 2

key term : atom

Answer 2

a particle of matter that uniquely defines a chemical element

Question 3

key term : compound

Answer 3

pure substance formed when atoms of different elements are bonded together

Question 4

key term : molecule

Answer 4

a group of atms bonded together

Question 5

key term : bonded

Answer 5

attached/held together, attraction between atoms

Question 9

key term : binary

Answer 9

two of something, 2 different atoms

Question 10

key term : polyatomic

Answer 10

three of more of something, made of three of more elements

Question 11

key term : ionic

Answer 11

a compound made of metals and non-metals

Question 12

key term : molecular/covalent

Answer 12

a compound made of only metals

Question 13

key term : nomenclature

Answer 13

a system for naming, foring writing names and formulas for compunds

Question 14

key term : multivalent

Answer 14

metals that have different chargers and/or valence numbers

Question 15

key term : polyatomic ion

Answer 15

group of elements with a charge

Question 16

key term : prefix

Answer 16

something that is added to the beginning of a word to change the mean, used in molecular nomenclature

Question 17

key term : acid

Answer 17

a compound that will separate and produce H + when dissolved in water

Question 18

key term : binary acid

Answer 18

acid that consist of only 2 elements (one of which is water)

Question 19

key term : aqueous

Answer 19

dissolved in water

Question 20

when it is a coeffient it means

Answer 20

atoms are not bonded together

Question 21

what are coeffecient used for

Answer 21

repersent amount of molecules

Question 22

who created nomenclature rules

Answer 22

jöns Jacob Berzelius
antoine-laurent lavoisier
louis-bernard guyton de morveau

Question 23

what are the prefix from 1-10

Answer 23

1 - mono
2 - di
3 - tri
4 - tetra
5- penta
6- hexa
7- hepta
8 - octa
9 - nona
10 - deca